arm: at91: arm926ejs/u-boot-spl.lds: Add _image_binary_end to SPL lds

[oweals/u-boot.git] / README

diff --git a/README b/README
index 87d79ef419685fabe2f0fe976386c82ab43c0cfe..a514f48caefc68b8453b8cc7ce0da3581f3504a8 100644 (file)
--- a/README
+++ b/README
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0+

 #
 # (C) Copyright 2000 - 2013
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 #
 # (C) Copyright 2000 - 2013
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.

-#
-# SPDX-License-Identifier:     GPL-2.0+
-#

 
 Summary:
 ========
 
 Summary:
 ========


@@ -333,11 +331,6 @@ The following options need to be configured:
 
 - Board Type:  Define exactly one, e.g. CONFIG_MPC8540ADS.
 
 
 - Board Type:  Define exactly one, e.g. CONFIG_MPC8540ADS.
 

-- Marvell Family Member
-               CONFIG_SYS_MVFS         - define it if you want to enable
-                                         multiple fs option at one time
-                                         for marvell soc family
-

 - 85xx CPU Options:
                CONFIG_SYS_PPC64
 
 - 85xx CPU Options:
                CONFIG_SYS_PPC64
 


@@ -535,25 +528,6 @@ The following options need to be configured:
                pointer. This is needed for the temporary stack before
                relocation.
 
                pointer. This is needed for the temporary stack before
                relocation.
 

-               CONFIG_SYS_MIPS_CACHE_MODE
-
-               Cache operation mode for the MIPS CPU.
-               See also arch/mips/include/asm/mipsregs.h.
-               Possible values are:
-                       CONF_CM_CACHABLE_NO_WA
-                       CONF_CM_CACHABLE_WA
-                       CONF_CM_UNCACHED
-                       CONF_CM_CACHABLE_NONCOHERENT
-                       CONF_CM_CACHABLE_CE
-                       CONF_CM_CACHABLE_COW
-                       CONF_CM_CACHABLE_CUW
-                       CONF_CM_CACHABLE_ACCELERATED
-
-               CONFIG_SYS_XWAY_EBU_BOOTCFG
-
-               Special option for Lantiq XWAY SoCs for booting from NOR flash.
-               See also arch/mips/cpu/mips32/start.S.
-

                CONFIG_XWAY_SWAP_BYTES
 
                Enable compilation of tools/xway-swap-bytes needed for Lantiq
                CONFIG_XWAY_SWAP_BYTES
 
                Enable compilation of tools/xway-swap-bytes needed for Lantiq


@@ -713,22 +687,6 @@ The following options need to be configured:
                as a convenience, when switching between booting from
                RAM and NFS.
 
                as a convenience, when switching between booting from
                RAM and NFS.
 

-- Pre-Boot Commands:
-               CONFIG_PREBOOT
-
-               When this option is #defined, the existence of the
-               environment variable "preboot" will be checked
-               immediately before starting the CONFIG_BOOTDELAY
-               countdown and/or running the auto-boot command resp.
-               entering interactive mode.
-
-               This feature is especially useful when "preboot" is
-               automatically generated or modified. For an example
-               see the LWMON board specific code: here "preboot" is
-               modified when the user holds down a certain
-               combination of keys on the (special) keyboard when
-               booting the systems
-

 - Serial Download Echo Mode:
                CONFIG_LOADS_ECHO
                If defined to 1, all characters received during a
 - Serial Download Echo Mode:
                CONFIG_LOADS_ECHO
                If defined to 1, all characters received during a


@@ -809,17 +767,6 @@ The following options need to be configured:
                SoC, then define this variable and provide board
                specific code for the "hw_watchdog_reset" function.
 
                SoC, then define this variable and provide board
                specific code for the "hw_watchdog_reset" function.
 

-               CONFIG_AT91_HW_WDT_TIMEOUT
-               specify the timeout in seconds. default 2 seconds.
-
-- U-Boot Version:
-               CONFIG_VERSION_VARIABLE
-               If this variable is defined, an environment variable
-               named "ver" is created by U-Boot showing the U-Boot
-               version as printed by the "version" command.
-               Any change to this variable will be reverted at the
-               next reset.
-

 - Real-Time Clock:
 
                When CONFIG_CMD_DATE is selected, the type of the RTC
 - Real-Time Clock:
 
                When CONFIG_CMD_DATE is selected, the type of the RTC


@@ -889,9 +836,6 @@ The following options need to be configured:
                CONFIG_EFI_PARTITION   GPT partition table, common when EFI is the
                                       bootloader.  Note 2TB partition limit; see
                                       disk/part_efi.c
                CONFIG_EFI_PARTITION   GPT partition table, common when EFI is the
                                       bootloader.  Note 2TB partition limit; see
                                       disk/part_efi.c

-               CONFIG_MTD_PARTITIONS  Memory Technology Device partition table.
-
-               If IDE or SCSI support is enabled (CONFIG_IDE or

                CONFIG_SCSI) you must configure support for at
                least one non-MTD partition type as well.
 
                CONFIG_SCSI) you must configure support for at
                least one non-MTD partition type as well.
 


@@ -995,9 +939,6 @@ The following options need to be configured:
                        Define this to use i/o functions instead of macros
                        (some hardware wont work with macros)
 
                        Define this to use i/o functions instead of macros
                        (some hardware wont work with macros)
 

-               CONFIG_DRIVER_TI_EMAC
-               Support for davinci emac
-

                        CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT
                        Define this if you have more then 3 PHYs.
 
                        CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT
                        Define this if you have more then 3 PHYs.
 


@@ -1182,17 +1123,10 @@ The following options need to be configured:
                CONFIG_SUPPORT_EMMC_BOOT
                Enable some additional features of the eMMC boot partitions.
 
                CONFIG_SUPPORT_EMMC_BOOT
                Enable some additional features of the eMMC boot partitions.
 

-               CONFIG_SUPPORT_EMMC_RPMB
-               Enable the commands for reading, writing and programming the
-               key for the Replay Protection Memory Block partition in eMMC.
-

 - USB Device Firmware Update (DFU) class support:
                CONFIG_DFU_OVER_USB
                This enables the USB portion of the DFU USB class
 
 - USB Device Firmware Update (DFU) class support:
                CONFIG_DFU_OVER_USB
                This enables the USB portion of the DFU USB class
 

-               CONFIG_DFU_MMC
-               This enables support for exposing (e)MMC devices via DFU.
-

                CONFIG_DFU_NAND
                This enables support for exposing NAND devices via DFU.
 
                CONFIG_DFU_NAND
                This enables support for exposing NAND devices via DFU.
 


@@ -1473,15 +1407,6 @@ The following options need to be configured:
                forwarded through a router.
                (Environment variable "netmask")
 
                forwarded through a router.
                (Environment variable "netmask")
 

-- Multicast TFTP Mode:
-               CONFIG_MCAST_TFTP
-
-               Defines whether you want to support multicast TFTP as per
-               rfc-2090; for example to work with atftp.  Lets lots of targets
-               tftp down the same boot image concurrently.  Note: the Ethernet
-               driver in use must provide a function: mcast() to join/leave a
-               multicast group.
-

 - BOOTP Recovery Mode:
                CONFIG_BOOTP_RANDOM_DELAY
 
 - BOOTP Recovery Mode:
                CONFIG_BOOTP_RANDOM_DELAY
 


@@ -1752,11 +1677,6 @@ The following options need to be configured:
                  - CONFIG_SYS_OMAP24_I2C_SPEED4 speed channel 4
                  - CONFIG_SYS_OMAP24_I2C_SLAVE4 slave addr channel 4
 
                  - CONFIG_SYS_OMAP24_I2C_SPEED4 speed channel 4
                  - CONFIG_SYS_OMAP24_I2C_SLAVE4 slave addr channel 4
 

-               - drivers/i2c/zynq_i2c.c
-                 - activate this driver with CONFIG_SYS_I2C_ZYNQ
-                 - set CONFIG_SYS_I2C_ZYNQ_SPEED for speed setting
-                 - set CONFIG_SYS_I2C_ZYNQ_SLAVE for slave addr
-

                - drivers/i2c/s3c24x0_i2c.c:
                  - activate this driver with CONFIG_SYS_I2C_S3C24X0
                  - This driver adds i2c buses (11 for Exynos5250, Exynos5420
                - drivers/i2c/s3c24x0_i2c.c:
                  - activate this driver with CONFIG_SYS_I2C_S3C24X0
                  - This driver adds i2c buses (11 for Exynos5250, Exynos5420


@@ -1976,14 +1896,6 @@ The following options need to be configured:
                SPI configuration items (port pins to use, etc). For
                an example, see include/configs/sacsng.h.
 
                SPI configuration items (port pins to use, etc). For
                an example, see include/configs/sacsng.h.
 

-               CONFIG_HARD_SPI
-
-               Enables a hardware SPI driver for general-purpose reads
-               and writes.  As with CONFIG_SOFT_SPI, the board configuration
-               must define a list of chip-select function pointers.
-               Currently supported on some MPC8xxx processors.  For an
-               example, see include/configs/mpc8349emds.h.
-

                CONFIG_SYS_SPI_MXC_WAIT
                Timeout for waiting until spi transfer completed.
                default: (CONFIG_SYS_HZ/100)     /* 10 ms */
                CONFIG_SYS_SPI_MXC_WAIT
                Timeout for waiting until spi transfer completed.
                default: (CONFIG_SYS_HZ/100)     /* 10 ms */


@@ -2050,13 +1962,6 @@ The following options need to be configured:
                200 ms.
 
 - Configuration Management:
                200 ms.
 
 - Configuration Management:

-               CONFIG_BUILD_TARGET
-
-               Some SoCs need special image types (e.g. U-Boot binary
-               with a special header) as build targets. By defining
-               CONFIG_BUILD_TARGET in the SoC / board header, this
-               special image will be automatically built upon calling
-               make / buildman.

 
                CONFIG_IDENT_STRING
 
 
                CONFIG_IDENT_STRING
 


@@ -2213,12 +2118,6 @@ The following options need to be configured:
                the environment like the "source" command or the
                boot command first.
 
                the environment like the "source" command or the
                boot command first.
 

-               CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
-
-               Define this in order to add variables describing certain
-               run-time determined information about the hardware to the
-               environment.  These will be named board_name, board_rev.
-

                CONFIG_DELAY_ENVIRONMENT
 
                Normally the environment is loaded when the board is
                CONFIG_DELAY_ENVIRONMENT
 
                Normally the environment is loaded when the board is


@@ -2228,21 +2127,6 @@ The following options need to be configured:
                this is instead controlled by the value of
                /config/load-environment.
 
                this is instead controlled by the value of
                /config/load-environment.
 

-- Serial Flash support
-               Usage requires an initial 'sf probe' to define the serial
-               flash parameters, followed by read/write/erase/update
-               commands.
-
-               The following defaults may be provided by the platform
-               to handle the common case when only a single serial
-               flash is present on the system.
-
-               CONFIG_SF_DEFAULT_BUS           Bus identifier
-               CONFIG_SF_DEFAULT_CS            Chip-select
-               CONFIG_SF_DEFAULT_MODE          (see include/spi.h)
-               CONFIG_SF_DEFAULT_SPEED         in Hz
-
-

 - TFTP Fixed UDP Port:
                CONFIG_TFTP_PORT
 
 - TFTP Fixed UDP Port:
                CONFIG_TFTP_PORT
 


@@ -2427,19 +2311,6 @@ FIT uImage format:
  -150  common/cmd_nand.c       Incorrect FIT image format
   151  common/cmd_nand.c       FIT image format OK
 
  -150  common/cmd_nand.c       Incorrect FIT image format
   151  common/cmd_nand.c       FIT image format OK
 

-- legacy image format:
-               CONFIG_IMAGE_FORMAT_LEGACY
-               enables the legacy image format support in U-Boot.
-
-               Default:
-               enabled if CONFIG_FIT_SIGNATURE is not defined.
-
-               CONFIG_DISABLE_IMAGE_LEGACY
-               disable the legacy image format
-
-               This define is introduced, as the legacy image format is
-               enabled per default for backward compatibility.
-

 - Standalone program support:
                CONFIG_STANDALONE_LOAD_ADDR
 
 - Standalone program support:
                CONFIG_STANDALONE_LOAD_ADDR
 


@@ -2471,17 +2342,6 @@ FIT uImage format:
                for a more detailed description refer to doc/README.update.
 
 - MTD Support (mtdparts command, UBI support)
                for a more detailed description refer to doc/README.update.
 
 - MTD Support (mtdparts command, UBI support)

-               CONFIG_MTD_DEVICE
-
-               Adds the MTD device infrastructure from the Linux kernel.
-               Needed for mtdparts command support.
-
-               CONFIG_MTD_PARTITIONS
-
-               Adds the MTD partitioning infrastructure from the Linux
-               kernel. Needed for UBI support.
-
-- UBI support

                CONFIG_MTD_UBI_WL_THRESHOLD
                This parameter defines the maximum difference between the highest
                erase counter value and the lowest erase counter value of eraseblocks
                CONFIG_MTD_UBI_WL_THRESHOLD
                This parameter defines the maximum difference between the highest
                erase counter value and the lowest erase counter value of eraseblocks


@@ -2663,6 +2523,10 @@ FIT uImage format:
                CONFIG_SPL_NAND_DRIVERS
                SPL uses normal NAND drivers, not minimal drivers.
 
                CONFIG_SPL_NAND_DRIVERS
                SPL uses normal NAND drivers, not minimal drivers.
 

+               CONFIG_SPL_NAND_IDENT
+               SPL uses the chip ID list to identify the NAND flash.
+               Requires CONFIG_SPL_NAND_BASE.
+

                CONFIG_SPL_NAND_ECC
                Include standard software ECC in the SPL
 
                CONFIG_SPL_NAND_ECC
                Include standard software ECC in the SPL
 


@@ -2724,7 +2588,7 @@ FIT uImage format:
                use an arch-specific makefile fragment instead, for
                example if more than one image needs to be produced.
 
                use an arch-specific makefile fragment instead, for
                example if more than one image needs to be produced.
 

-               CONFIG_FIT_SPL_PRINT
+               CONFIG_SPL_FIT_PRINT

                Printing information about a FIT image adds quite a bit of
                code to SPL. So this is normally disabled in SPL. Use this
                option to re-enable it. This will affect the output of the
                Printing information about a FIT image adds quite a bit of
                code to SPL. So this is normally disabled in SPL. Use this
                option to re-enable it. This will affect the output of the


@@ -2802,9 +2666,6 @@ Configuration Settings:
                Begin and End addresses of the area used by the
                simple memory test.
 
                Begin and End addresses of the area used by the
                simple memory test.
 

-- CONFIG_SYS_ALT_MEMTEST:
-               Enable an alternate, more extensive memory test.
-

 - CONFIG_SYS_MEMTEST_SCRATCH:
                Scratch address used by the alternate memory test
                You only need to set this if address zero isn't writeable
 - CONFIG_SYS_MEMTEST_SCRATCH:
                Scratch address used by the alternate memory test
                You only need to set this if address zero isn't writeable


@@ -3069,11 +2930,6 @@ Configuration Settings:
        If defined, don't allow the -f switch to env set override variable
        access flags.
 
        If defined, don't allow the -f switch to env set override variable
        access flags.
 

-- CONFIG_USE_STDINT
-       If stdint.h is available with your toolchain you can define this
-       option to enable it. You can provide option 'USE_STDINT=1' when
-       building U-Boot to enable this.
-

 The following definitions that deal with the placement and management
 of environment data (variable area); in general, we support the
 following configurations:
 The following definitions that deal with the placement and management
 of environment data (variable area); in general, we support the
 following configurations:


@@ -3315,8 +3171,8 @@ Low Level (hardware related) configuration options:
                a 16 bit bus.
                Not all NAND drivers use this symbol.
                Example of drivers that use it:
                a 16 bit bus.
                Not all NAND drivers use this symbol.
                Example of drivers that use it:

-               - drivers/mtd/nand/ndfc.c
-               - drivers/mtd/nand/mxc_nand.c
+               - drivers/mtd/nand/raw/ndfc.c
+               - drivers/mtd/nand/raw/mxc_nand.c

 
 - CONFIG_SYS_NDFC_EBC0_CFG
                Sets the EBC0_CFG register for the NDFC. If not defined
 
 - CONFIG_SYS_NDFC_EBC0_CFG
                Sets the EBC0_CFG register for the NDFC. If not defined


@@ -3433,7 +3289,7 @@ Low Level (hardware related) configuration options:
 - CONFIG_SYS_NAND_NO_SUBPAGE_WRITE
                Option to disable subpage write in NAND driver
                driver that uses this:
 - CONFIG_SYS_NAND_NO_SUBPAGE_WRITE
                Option to disable subpage write in NAND driver
                driver that uses this:

-               drivers/mtd/nand/davinci_nand.c
+               drivers/mtd/nand/raw/davinci_nand.c

 
 Freescale QE/FMAN Firmware Support:
 -----------------------------------
 
 Freescale QE/FMAN Firmware Support:
 -----------------------------------


@@ -3994,6 +3850,17 @@ If CONFIG_REGEX is defined, the variable_name above is evaluated as a
 regular expression. This allows multiple variables to be connected to
 the same callback without explicitly listing them all out.
 
 regular expression. This allows multiple variables to be connected to
 the same callback without explicitly listing them all out.
 

+The signature of the callback functions is:
+
+    int callback(const char *name, const char *value, enum env_op op, int flags)
+
+* name - changed environment variable
+* value - new value of the environment variable
+* op - operation (create, overwrite, or delete)
+* flags - attributes of the environment variable change, see flags H_* in
+  include/search.h
+
+The return value is 0 if the variable change is accepted and 1 otherwise.

 
 Command Line Parsing:
 =====================
 
 Command Line Parsing:
 =====================